Could anyone please explain how does this thing work? I was under impression you need to be 95lvl to gamble for +2skills (so every gambled circlet will have chance to get +2), but reading wiki confused me a little.
What is the minimum level to effectively gamble for +2 skills? I believe gambling cost raises each level, and %rare odds are the same now for every clvl. Also is there any difference in gambling circlets/coronets (other than max socket thing).
+2 skills has an affix level of 90, except for class-specific items where it's 50 if possible.
Gambling produces items with an ilvl of charlvl-5 to charlvl+4, randomly.
For amulets you need an ilvl of 90 for the +2 skills affixes being available (alvl=ilvl for amulets because their base qlvl is 1). That means, at L86, 10% of the gambled amulets have a chance for +2, 20% at L87 etc. and finally 100% at L95.
For circlet-like items, the alvl is max(ilvl,base qlvl)+magic level. Circlet: magic level=3, coronet: 8, tiara: 13, diadem: 18. The base qlvl of circlets is rather low, so for gambling it's basically ilvl+3 which means from L92 on, all gambled circlets have a chance for +2 skills. It's L87 for coronets and I strongly suggest to gamble for these because (1) circlets don't have a chance to be upgraded to exeptional or elite while gambling and (2) ionly tiaras and diadems can have 3 sockets which might be important because 90% of your gambles will be magical.
For items with no magic level or a qlvl of more than 1 (i.e. nearly all the rest), the calculation is a bit more complex. See the affix level calculation procedure.
But circlets are like 50% cheaper (2/3 or coronet cost or so), does the opportunity to get magic 3s pay this off? And can you get 3s on magic tiara/diadem due larzuk, or it it only for socketing affix?
It's just an issue with respect to the jeweler's affix. Maybe it doesn't pay off, but it probably hurts more if you gamble a jeweler's circlet of (something nice) and and it couldn't get the 3 sockets which it was supposed to receive :azn: